Bench Dog Joist-Loc Hanger Bracket Installation Tool #10-007 Hang your brackets first and save hours of time and frustration Lock pins hold tool to rim joist, freeing up both hands to nail in the hanger Multiple alignment slots allow fast positioning to your joist locations Easily adjusts to handle 2-by-12 joists Compatible with single, angled and double joist hanger brackets; 2-year limited warranty